tractor, it can bring personnel, it can also evacuate patients. it can also bring resources that we otherwise wouldn't be able to get into the city. general spies has said it many times, they have the ability to go around, over, i think through was one of those as well, any of the obstacles we find in our way. that's a resource we in san francisco really have to capitalize on. as i look at all these things, frankly i just was talking to somebody this morning, this is like the toy store of resources for me. when you sit on this ship, you look around, yes, it's a ship, it carries helicopters. it is so much more than that. it's a platform that does so many things. it's like your i phone. you ask it what you want it to do and there's probably an app for that. and that's the beauty of it. it's a multi use platform when we started to engage these kinds of resources.